Furnace front



J. REID.

FURNACE rnpur. APPLICATION FILED NOV. 2. i9l8.

Patented 0%. 7,1919.

2 SHEETSSHEET 1.

nu; uumnm PLANOGRMIII cm, WASHINGTON, Y). C.

J. REID.

FURNACE FRONT.

APPLICATION FILED NOV. 2. 1918.

1 ,3 1 8,3 3 1 B Patented Oct. 7, 1919.

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specification and illustrated in the accompanying drawings that form parto'f the same. b y c,

The invention consists essentially of the novel construction and ar rangement of parts, whereby the, casting is and the sections and pieces of the frontmade so as to be adaptable to standardization p The objects of the invention ar to eliminate the expense and inconvenience incidental-to making each front special and to'provide in spite of thevariations called forby differences in the furnace diameters and Hangings, by Variations in fuel systems, oil or coal fuel equipment, by combinations of both or from any other reason arising from special conditions of sale, all or many of the sections or parts of the front from a stock in hand, to simplify casting processes, to cutout lost casings, which are quite intricate in the ordinary solid cast fronts, to reduce losses in foundry work'by eliminating waste in material and labor, and generally toapply an efficiency system in the production of furnace fronts. J U

In the drawings, Figure l is a front elevation of thefront Plate. I i 5 Fig. 2 is a rear elevation of the back plate s- I is a m i s ctipnel ie through the fuel and air passage casings-and ash pit flare, showing'an outline of the"*-b'ack Pl 7 1 .v

Fig. eisacross sectional view of the comr .plete, furnace front on the line H of i ,Fig. 5 is'a cross sectional viewof'thecmnplete furnace front on the line 55 of F g- Fig. 6 is a vertical mid-sectional View of the assembled parts.

Like numerals of reference indicate corresponding parts in each figure. h

In further explanation of the purpose to tandardize the eenstru ction; of ,forced area furnace fronts ar Scotch an other forms of steam boiler, as referred to in my Patent No. 1,300,876, it may be said that in this invention a new form is developed,

f vvhich will: greatly facilitate the construction, manufacture and marketing of 'the article, H h i It Will'loe' understood from the description herein thatI can order'ast large number of ,j 'the from plates with their attachments anamounting such as coaling'doors, ashpit doors, latches, "handles, cove-r plates, clips and other-pieces and as emble the same and putthem into stock. I canf'also have 'cast a corresponding number of 'what 'I calljthe intermediate castings, with air chambers, also'f'tl-ielashpitwall castings, which will go between the none and back plates "at their fbefitbi p ipheries to cementum the bottom o'f ithe ashpit'passage.

n recelvlng .an order for a certain numfir 6f, f' f spe ified diameter to S specified furnace diameter Hanging, I cast only the 'bac'k'plates to, order and as- "semble them by bolting the intermediate casting, 'ashpi t bottom casting, and front plate to complete the furnace front.

I Care must, of course, be taken in making the resulting bolted front as substantial when assembled as the ordinary form of single casting but this presents no difiiculty a practical man as a good asbestos or other form of cement may be used to stop the joints, where air leaks might occur or stresses in the casting develop from unequal strain of the bolts. I I

It will be noted also that where repairs have to be efiected or breakages made good,

one part or another in each front will have to be'discarded,instead of a whole solid cast front as at present, thus greatly reducing losses in shipment or by damage on ship board. Parts most afiected bybreaking in service are the back ,platesfof which a spare supply can be carried. 7

Referring to the drawings, the front plate 1 ,for1ns one of the main parts making up this invention and is preferably cast as a separate piece or section of the front, though not necessarily as it maybe cast with the fuel passage. 7 p i The front platel is thus made standard and withinfreason applied to all furnaces of the type,- for which these-fronts are deslgnedi This p ate l'is formed with the ashraise opening 4. abeve said. deer opening 3,

ash it opening 2.

maintaining the fuel I "fiXed position.

I the main'.castings.' The bolt lugs 22"eXtend from-"the upper outer wall 17 ofthe casing 12 and theibolt -=-1ugs 23 from the lower single'wall 12.

'1" The fuel passage casing 12 is preferably a standard partor section, therefore applip chosen type.

"different sizes 'andforms, thoughit is al-. ways possible to stock' a considerable quanwhich .is centrally arranged above'the' said rom the inner surface of the said front. plate, around the lower portion of the fuel opening and near to theedge, a substan-' tiall U-shaped rib or ledge 5 projects in-- war ly as a support for the fuel passage casing. Above the said door opening, the central boss 6 projects inwardly and at each side of said door opening, the bosses 7 and 8 also project inwardly, these bosses being so arranged for the purposes of cent'ering and alining the parts in assembling and preventing displacement due to varying temperatures after installation. I I V 7 On the face of the front plate 1, the usual 'hinge lugs 9 are formed at the side of the door opening? The arc-shaped rib or ledge 10 is formed on theinner' side 'of said front plate close to the bottom edge, to support the ash pit plate flare, and around thelsaid ash pit opening 2 the plate 1 is thickened to form a door.

The casing 12 forms the fuel passage and the upper portion 16 is inelosed by the wall 17 and forms therewith the air chamber 13, having the in1ets'14 through the top wall frame and a seat 11 forthe 'ashjpit thereof and the outlets 15 through the back plate. It will be seen that the upper part 16 of the fuel casing 12 forms the inner wall of the air chamber 13 and'that the'wall 17 forms the outer inclosure, the latter joining the casing 12 at the lower end of the part indicated by the numeral 16, thereby forming'a 'bottom'wall 17 to said chamber 13,

which stands on the extremities of the U shapedledge 5.

' 'Atthe rear end of the wall 17, the'joint recess 20 is formed to receive the back plate and similarly at the rear end of the wall. 12, the joint recess 19 is formed, being the lower portion of the fuelcasing; The rib 21 from the front plate provides a joint recess for the front end of the wall 17 r J Thebosses 6, 7 and 8 extend into the air chamber 13 between the walls thereof in the front of said air chamber Y13 and. aid in passage casing m a All the ledges and ribs are mag-m1 with cable to" the numerous furnace fronts of the Theback plate 24 may 'beinadein many tity of each of the differentpatterns, thereby gainin onelof the objects of my invention. Thisja vantage at havi g agnnmber in'steek is greatly facilitated by the use of' my adapter ring as described in my Patent No.

25 and is secured between the front plate 1 7 hand the back plate 24 and is flush with the openings 2'and 27. i

The front plate 1, the fuel casing 12, the

ash pit flare 29 and theback plate 24 are all held together byfthe various bolts 32 and preferably asbestos "cement is used in the joint recesses toreffectua lly close any openingsthat'may occur due to strain or' stress in assembling or possible inequalities in the castings. r r

The several parts rigidly-secured together constitutethe furnace front complete, unless an adapter ring is'required tofit it to the furnacemouth,

their positions and may all be of standard design. The back plate and the ash pit flare may be readily replaced at any time and as before explained, it is particularly desirable to have. a replaceable back plate.

inbefore setting forth the advantages of the invention are justified by the detailed description of the'parts, and thatthe furnace front may readily be formed in two or more sections or.pieces and thereby make it pos- "sible to standardize; one or more of said sections or pieces'and'by' so doing'increase thereliability and life ofthe furnace front and facilitate the replacing and repairing of parts. r

Various changes may be made in the construction of this device Without departing from the spirit of the invention so long as lthey remain' within the scope of the claims 'for' novelty following.

Wh'at I' damas I 1. A furnace front comprising a front plate, a ba'ckplate, a fuel passage casing and an ash pitflare, said casing and ash pit flare being interposed between the front and back iiplates, bosses formed on oneof the plates and adapted to guide the casing to its operative position in assembling the parts, and ledges carried by the said plates for receiving and supporting the ash pit flare.

The accessories, such as the doors, hinges, catches, fastenings and valves are fitted to It will thus be seen that the remarks here-'7 "-2.-"A furnace front'comprising a front I plate having guiding bosses and lp'rovided "with; a rfuel; opening, a substantially UK V shaped ledge arried by the front plate at" the inner face thereof and extending around the lower portion of the fuel opening, forming upright and horizontal supports, an areshaped ledge also carried by the front plate and located adjacent to the lower edge thereof, a fuel passage casing having an air chamber and supported on said U-shaped ledge, the said bosses being adapted to guide the casing to its operative position in assembling the parts, and the said upright supports abutting the lower wall of the air chamber of the said casing and the said air chamber receiving the said guiding bosses of the front plate, an ash pit flare arranged upon the arc-shaped ledge, a back plate formed to fit the rear end of the said fuel passage casing and provided with means for supporting the ash pit flare, and bolts rigidly securing the said parts together.

Signed at New York city this 29 day of 20 October, 1918.

JOHN REID.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0. 

